Iodine is an essential element required for normal function of the thyroid gland and immune system, and the integrity of breast tissue. This test can be performed using conventional random or 24-hour urine collection

For use with a loading dose, please see test NUT 4 Urine Iodine Pre and Post Loading Test.

(Administration of a loading dose of iodide/iodine. Iodine is measured by ICP-MS, as is used by the CDC.).

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